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Do Individual Investors Have Asymmetric Information Based on Work Experience?
Author(s) -
DØSKELAND TROND M.,
HVIDE HANS K.
Publication year - 2011
Publication title -
the journal of finance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 18.151
H-Index - 299
eISSN - 1540-6261
pISSN - 0022-1082
DOI - 10.1111/j.1540-6261.2011.01658.x
Subject(s) - overconfidence effect , stock (firearms) , portfolio , business , financial economics , economics , information asymmetry , preference , monetary economics , finance , microeconomics , mechanical engineering , psychology , social psychology , engineering
Using a novel data set covering all individual investors' stock market transactions in Norway over 10 years, we analyze whether individual investors have a preference for professionally close stocks, and whether they make excess returns on such investments. After excluding own‐company stock holdings, investors hold 11% of their portfolio in stocks within their two‐digit industry of employment. Given the poor hedging properties of such investments, one would expect abnormally high returns. In contrast, all estimates of abnormal returns are negative, in many cases statistically significant. Overconfidence seems the most likely explanation for the excessive trading in professionally close stocks.